"I want the world to know we think of kids with illness as different. Truth is, they are extraordinary because they overcome things we can't imagine and they do it with a smile," Rosenberger told ABC News. "These capes are more than fabric. A cape is a visible sign of strength that everyone can recognize. It lets kids and their family know how extraordinary they really are. Almost every kid who puts the cape on sticks their arms out and starts running!"

Rosenberger, who has a 19-month-old son, moved to Seattle from St. Louis, Mo., four years ago. Last summer, she started sewing again and made a superhero cape for her nephew's second birthday and her son.

Rosenberger had been following the blog of a girl named Brenna, below, who was born with a rare congenital skin disease.

TinySuperHeroes

"It became clear that Brenna needed a cape!" she said. "I quickly realized there were other kids out there who actually were tiny superheroes."

Rosenberger sewed her a cape with a big yellow B. Brenna loved it and in January "Super Brenna" was born.

As soon as the cape and Brenna were featured on Rosenberger's blog, "we were immediately met by dozens of other nominations for tiny superheroes," she said.

Her Tiny Superheroes now include "Super Anthony" in Illinois who is suffering heart and muscle problems as well as "Super Mabel" and "Super Andrew."

Rosenberger is maintaining and building a network of Tiny Superheroes. In six months, she's sent 700 personalized capes to sick children in 45 states and 11 countries. Each cape comes with a handwritten message.

The mother of Super KE, below, a 10-year-old battling a severe gastrointestinal disorder, said he never takes his cape off.

TinySuperHeroes

"He has taken the cape into his biopsy, to the emergency room," she said. "He showed other patients. It helps give him a sense of comfort."

Rosenberger now gets 10 to 20 requests a day. She quit her job and has pulled friends in to help.

"We are building a TinySuperhero squad. Together these kids can make a difference. We cross-reference their stories," she said. "Then, by sharing them we can help raise awareness. Raising awareness brings funding, funding leads to more research, and research brings cures."

Rosenberger has mailed capes to children affected by Oklahoma's recent tornadoes.

She hopes to establish contacts with children's hospitals and ultimately have a Tiny Superheroes center "that takes our relationship with the children outside the virtual world."

"If you would have told me six months ago that this would be my life, I would have paid a million dollars to make this my life, but I wouldn't believe you," Rosenberger said.